Harvard Business Review is a US management magazine published by Harvard Business Publishing, featuring articles, case studies and research on leadership, strategy and business.
Mark Manson is the website of author Mark Manson, with popular essays on relationships, self-improvement and happiness, and the bestselling book The Subtle Art.
Tim Ferriss is the website of author and podcaster Tim Ferriss, featuring blog posts, books such as The 4-Hour Workweek and the podcast on productivity and performance.